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213408 (2001 WJ26)
Classification: Main-belt Asteroid          SPK-ID: 2213408
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3381323251831536 4.8009e-08  
a 3.179099373512175 2.0918e-08 au
q 2.104143110358196 1.5537e-07 au
i 25.07948593899876 9.4236e-06 deg
node 59.94440154968001 1.2856e-05 deg
peri 48.79310963902086 2.4993e-05 deg
M 104.7966057410349 1.5552e-05 deg
tp 2458597.802627947069
(2019-Apr-24.30262795)
8.7025e-05 TDB
period 2070.401540248517
5.67
2.0434e-05
5.595e-08
d
yr
n .1738793142304116 1.7161e-09 deg/d
Q 4.254055636666154 2.7991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      452  
   data-arc span      6793 days (18.60 yr)  
   first obs. used      2001-10-17  
   last obs. used      2020-05-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49626  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:42:35  

Additional Information
 Earth MOID = 1.18916 au 
 Jupiter MOID = 1.47928 au 
 T_jup = 2.969 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.26   n/a MPCxxxxx  
diameter diameter 6.458 km 1.555 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.042   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

213408 (2001 WJ26)          Discovered 2001-Nov-17 by LINEAR at Socorro
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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